Relyon Softech Ltd. Supplies Electronic Return Preparation Software for Karnataka VAT. Relyon Softech Ltd. Supplies IT products, solutions and services. Electronic Return Preparation Software for Karnataka VAT is the software for generating XML of purchases, sales and statutory forms information. Electronic Return Preparation Software for Karnataka VAT is designed to reduce the time required to fill in the data for generating XML as per Commercial Tax Department [CTD]. It is simple to understand as the software is excel based.